Replace some uses of `int' with EMACS_INT.

Replace some uses of `int' with EMACS_INT.

 src/search.c (string_match_1, fast_string_match)
 (fast_c_string_match_ignore_case, fast_string_match_ignore_case)
 (scan_buffer, find_next_newline_no_quit)
 (find_before_next_newline, search_command, Freplace_match)
 (Fmatch_data): Make some `int' variables be EMACS_INT.
 src/xdisp.c (display_count_lines): 3rd argument and return value now
 EMACS_INT.  All callers changed.
 (pint2hrstr): Last argument is now EMACS_INT.
 src/coding.c (detect_coding_utf_8, detect_coding_emacs_mule)
 (detect_coding_iso_2022, detect_coding_sjis, detect_coding_big5)
 (detect_coding_ccl, detect_coding_charset, decode_coding_utf_8)
 (decode_coding_utf_16, decode_coding_emacs_mule)
 (decode_coding_iso_2022, decode_coding_sjis, decode_coding_big5)
 (decode_coding_ccl, decode_coding_charset)
 <consumed_chars, consumed_chars_base>: Declare EMACS_INT.
 (decode_coding_iso_2022, decode_coding_emacs_mule)
 (decode_coding_sjis, decode_coding_big5, decode_coding_charset)
 <char_offset, last_offset>: Declare EMACS_INT.
 (encode_coding_utf_8, encode_coding_utf_16)
 (encode_coding_emacs_mule, encode_invocation_designation)
 (encode_designation_at_bol, encode_coding_iso_2022)
 (encode_coding_sjis, encode_coding_big5, encode_coding_ccl)
 (encode_coding_raw_text, encode_coding_charset) <produced_chars>:
 Declare EMACS_INT.
 (ASSURE_DESTINATION): Declare more_bytes EMACS_INT.
 (encode_invocation_designation): Last argument P_NCHARS is now
 EMACS_INT.
 (decode_eol): Declare pos_byte, pos, and pos_end EMACS_INT.
 (produce_chars): from_nchars and to_nchars are now EMACS_INT.
 src/coding.h (struct coding_system) <head_ascii>: Declare EMACS_INT.
 All users changed.
 src/ccl.c (Fccl_execute_on_string): Declare some variables
 EMACS_INT.